The CdaCrr app has been released this week on the Google Store.
For the moment, it has only been tested on Samsung S4/S5 and Sony Xperia Active phones and it records correctly from a PowerTap powermeter.
It implements Virtual Elevation method (aka: Chung method) to measure CdA (aerodynamic coefficient of drag) and Crr (rolling resistance coefficient) when riding a bike.
